WEBVTT
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Okay, this time we have compound see to H
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five. Oh, and we need to find the
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molecular form A. This is the imperial formal on
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me trendy molecular formula, which I will call two
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X C two X age five bucks and O s
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. All right. I'm doing this because these sub
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scripts or number of elements is giving us, like
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a Moeller ratio of each element in this compound.
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So for every two moles of carbon, there's five
10
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moles of hydrogen and there's one more oxygen, so
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x x x, and, you know, morally
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shoot. All right, as we know before,
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exe to find X going to do is to buy
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the molecular formula by the internal form. So they've
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already given us this molecular formula as 90 90 guards
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parole. And we can easily find careful for the
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molecular formula or the muffler. Wait. Sorry.
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Yes, or this guy's empirical formula. Right?
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So we have two carbon atoms, and we know
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that if you look at our periodic table, the
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molecular for carpet 12 01 of seven. Oh,
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I know seven grands Permal. And now we have
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hydrogen molecular formula for an Adam from all of for
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hydrogen is 1.794 gas for more. Just say that
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I thought, you know the units. And then
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oxygen is just 15 like 999 after a lot of
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practice. Well, you will be able tow,
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Memorize all these molecular weights. Yes. You know
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, grams for more. So then some of all
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of this equals 45 point. Oh, sits.
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Zero fire, if you remember what I said a
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couple minutes to go X in The molecular formula is
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a division between with much lower rate of the molecular
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formula over the Markkula rate of the empirical formula.
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So you can already see. But it's simply 90/45
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which even vote calculator mean about to be to approximately
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two on the so grams from all you know,
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it's too. So you just need to do some
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simple multiplication to find the, you know, molecular
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formula. So two times, too, You know
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, it's 45 times to 10 2 times 12 So
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then army like you What formula was Just see for
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H 10. Oh, too. Uh huh.